# JavaScript: Calculate the Hamming distance between two values

## JavaScript fundamental (ES6 Syntax): Exercise-219 with Solution

Write a JavaScript program to calculate the Hamming distance between two values.

• Use the XOR operator (^) to find the bit difference between the two numbers.
• Convert to a binary string using Number.prototype.toString(2).
• Count and return the number of 1s in the string, using String.prototype.match(/1/g).

Sample Solution:

JavaScript Code:

``````//#Source https://bit.ly/2neWfJ2
const hammingDistance = (num1, num2) => ((num1 ^ num2).toString(2).match(/1/g) || '').length;
console.log(hammingDistance(2, 3));
console.log(hammingDistance(5, 3));
```
```

Sample Output:

```1
2
```

Flowchart: Live Demo:

See the Pen javascript-basic-exercise-219-1 by w3resource (@w3resource) on CodePen.

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